Pump-valve.



No. 784,534. PATENTED MAR. 14, 1905.

J. M. BASSETT.

PUMP VALVE.

APPLIUATION FILED JUNE 21.1904.

Patented March 14, 1905.

PATENT EEIcE.

JOHN MOT" BASSETT, OF DALLAS, TEXAS.

PUMP-VALVE.

SPECIFICATION forming part of Letters Patent No. 784,534, dated March 14, 1905.

Application filed June 21, 1904. Serial No. 213,478.

To 1/. 1071/0111, it may concern:

Be it known that I, J OHN i IoT'r BASSETT, a citizen of the United States, residing at Dallas, Texas, have invented certain new and useful Improvements in Pump-Valves, of which the following is a specification.

This invention relates to pump-valves; and the object is to construct a valve which is simple in construction, having the least number of parts that can be used compatible with the best service, which is adapted for use in any kind of pump or compressor, in which the wearing parts can be replaced with the least expense, which has a renewable seating-surface, and which has the parts so arranged as to permit the greatest outflow according to the size of the valve area, there being an unobstructed passage through the valve.

Other objects and advantages will be fully explained in the following description, and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings, which form a part of this application.

Figure 1 is a plan view of the valve, Fig. 2 is a side elevation of same. Fig. 3 is a vertical section. Fig. at is a plan view of the removable seat-ring. Fig. 5 is a bottom plan view. Fig. 6 is a vertical section showing a variation of the spring and the means for screwing the seat on the pump deck or partition.

Similar characters of reference are used to indicate the same parts throughout the several views.

The valve is provided with a cage which has a rim 3, which may be threaded to screw onto correspondingthreads on the seat. This is one of the convenient ways of attaching the cage to the seat. The cage may be attached to the seat in any other suitable way. The cage has any number of suitable arms 2, which connect the rim 3 with the cover 1. The cover 1 constitutes a seat for the spring 6, and the cover has a boss 16 formed on it. This boss 16 forms a convenient wrench hold or pur chase and is bored out central to the valveseat for a guide to the valve-stem, so that the valve will always seat in a central position. The interior of the rim 3 has an inward-projecting annular flange or lip 11, which serves to hold the removable valve-seating surface '7 down in its place. The valve is a comparatively light disk 4 with stem 5, which works in a guide 16 of the valve-cage and is kept in a central position by said guide. The end of the stem projects through the guide 16 far enough to be grasped for the purpose of raising the valve to examine the seat, so that it is not necessary to remove the cage to examine the seat-valve. The valve. has a helical spring which has its large end upward in a seat provided for it in the valve-cover 1 and its smallend downward around the valve-stem, thus having a central thrust on the valve and causing a true seating of the valve. The valve-seat 8 may be fastened in a valve-deck or pump partition in various ways. The drawings illustrate one of these practical ways. The upper end of the seat is threaded and screwed into cage-rim 3. The lower part of the valve-seatis threaded to be screwed into the pump deck or partition. The opening through the seat is partly cylindrical and partly funnel-shaped, as shown in Fig. 3. 1n-

ward-projecting lugs 12 are formed integral with the seat 8 for convenience in screwing the seat into the pump deck or partition. These lugs are not in the direct passage through the seat, but are offset relative to said passage by reason. of being placed at one side of the direct passage, the funnel shape of the scat permitting this arrangement. A suitable instrument can be inserted through the top of the seat 8 before the cage is screwed on the seat to engage the lugs 12 to screw the seat in or out of the pump deck or partition. An

annular groove 11 is formed in the upper part-of the seat 8 for the removable valveseating ring 7, leaving the cylindrical flange 15 projecting upwardly. This flange 15 protects the seating-surface 7 from the wearing action of water or other elements and holds the seat in place. This flange, together sary.

metal which will not be quickly worn ,away by the water or other elements. Whatever wear there is takes effect on the renewable seating-ring instead of on the valve itself, which is made of hard material. The wearing action is transferred to the hard surface of the'valve-disk rather than to a soft surface, as heretofore commonly used. 'Heretofore a soft surface has been used to turn the current of the elements passing through thevalve. I have reversed the usual construction by using a hard surface to break the force of and turn the current and have placed the soft or sealing surface where it can be readily renewed at small cost. The soft surface is thus placed in a position so that it is not subject to the wearing action of the breaking of the direc* tion of the current. The seating-ring may be made of anysuitable material. The valvestem 5 moves freely through the guide 16, but is held down on the seating-ring? by the helical spring 6 when not forced upward for the escape of water or other elements.

The different parts of the valve maybe made of any suitable material that is best adapted for the work of the pump in which it is to be used. The seating-rings 7 can be so easily replaced and the construction is so simple that the expense of replacing it is inconsiderable. A spiral spring 17 may be substituted for the helical spring 6 for various uses. Instead of the lugs 12 for putting on or taking off the seat grooves 18 may be made in the seat for. an engaging instrument. The prongs of an engaging instrument may be inserted in the grooves 18.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A valve comprising a cage havingacover and a rim and suitable arms connecting said rim and cover, said cover having a boss formed on the upper part thereof, a seat screwed into said rim and threaded on the lower part thereof for engaging the pump-deck, said seat having an annular groove formed in the upper part thereof, a seating-ring mounted in said groove, a valve disk of hardened material adapted to seat on said ring and having a stem integral therewith and adapted to move freely through said boss, and a helical spring'seated in said cover and adapted to direct the thrust of said disk.

2. Avalve comprising a cage having a cover and a rim and suitable arms connecting said cover and rim, a boss formed on said cover and constituting a guide for the valve-stem, a seat attached to said rim, an annular groove formed in said seat, a seating-ring of suitable material mounted in said groove, a cylindrical flange protecting said seating-ring and holding the same in place against radial displacement, said rim having an inward projecting flange adapted to prevent axial displacement of said seating-ring, and a spring-pressed valve adapted to seaton said ring, and having astem moving freely through said boss.

3. A valve comprising a cage having a cover with a spring-seat formed therein and a rim and suitable arms connecting said rim and cover, a seat attached to said rim, .a seatingring mounted in said seat, an upward projecting cylindrical flange formed on said seat and an inward projecting flange or lip formed on said rim for preventing displacement of said said cover, and a helical spring surrounding said stem and seated in said cover and adapted to direct a central thrust of said disk on said seating-ring.

4. A valve comprising a cage having a cover with a spring-seat formed therein and a valvestem guide formed thereon and a rim and suit able arms connecting said rim and cover, a seat attached to said rim, a renewable seatingring mounted in said seat and adapted to receive the wear of the element passing through the valve, a flange on said seat and a flange on said rim for preventing displacement of said ring, a valve disk having a stem integral therewith and moving freely through said guide, and a spring seated in said seat and adapted to direct the thrust of said valve-disk on said seating-ring.

5. Avalvc comprising a seat having an annular groove in the upper part, a seating-ring mounted in said groove whereby said ring is held against radial displacement and protected from the wearing action of elements passing through the valve, a cage having a rim attached to said seat and having a guide for the valve-stem, said rim having an annular inwardly-projecting lip to prevent axial displacement of said seating-ring, and a springpressed valve-disk of hardened material seatable on said seating-ring and provided with a stem projecting through said guide.

6. A valve comprising a seat having a renewable seating-ring of suitable material mounted therein, a spring-pressed valve-disk of hard material adapted to form a seal with said seating-ring, and a cage preventing displacement of said valve, said cage and said seat having provisions preventing the displacement of said seating-ring.

In testimony whereof I set my hand, in the presence of two witnesses, this 23d day of May, 1904.

JOHN MOTT BASSETT.

Witnesses:

S. J. FUNDERBURK, M. J. Scoeem. 

